How a Stock Exchange Scare Dislocated the Life of the Empire For Two Days, a story in the "Doom of London" series in which the author sounds the clarion call of potential disasters that my befall the great city. Here, it is the tale of an investment "bubble", an irrational exuberance for buying shares of South African gold mining stocks. Excerpts: "From the highest to the lowest everybody was investing their savings in South Africa. ... In other words, there was a tremendous 'boom.' Nothing like it had ever been seen in the history of commerce.